25045512421 has 16 divisors (see below), whose sum is σ = 25809592320. Its totient is φ = 24292079280.

The previous prime is 25045512413. The next prime is 25045512509. The reversal of 25045512421 is 12421554052.

It is a cyclic number.

It is not a de Polignac number, because 25045512421 - 2³ = 25045512413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25045552421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2364880 + ... + 2375446.

It is an arithmetic number, because the mean of its divisors is an integer number (1613099520).

Almost surely, 2^25045512421 is an apocalyptic number.

It is an amenable number.

25045512421 is a deficient number, since it is larger than the sum of its proper divisors (764079899).

25045512421 is a wasteful number, since it uses less digits than its factorization.

25045512421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11064.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 25045512421 in words is "twenty-five billion, forty-five million, five hundred twelve thousand, four hundred twenty-one".