25214977 has 4 divisors (see below), whose sum is σ = 25235716. Its totient is φ = 25194240.

The previous prime is 25214971. The next prime is 25214989. The reversal of 25214977 is 77941252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18054001 + 7160976 = 4249^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 25214977 - 2¹⁹ = 24690689 is a prime.

It is a super-2 number, since 2×25214977² = 1271590130221058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25214971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8424 + ... + 11017.

It is an arithmetic number, because the mean of its divisors is an integer number (6308929).

It is a Proth number, since it is equal to 1539 ⋅ 2¹⁴ + 1 and 1539 < 2¹⁴.

Almost surely, 2^25214977 is an apocalyptic number.

It is an amenable number.

25214977 is a deficient number, since it is larger than the sum of its proper divisors (20739).

25214977 is a wasteful number, since it uses less digits than its factorization.

25214977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20738.

The product of its digits is 35280, while the sum is 37.

The square root of 25214977 is about 5021.4516825317. The cubic root of 25214977 is about 293.2375116024.

The spelling of 25214977 in words is "twenty-five million, two hundred fourteen thousand, nine hundred seventy-seven".