1225526585450 has 24 divisors (see below), whose sum is σ = 2280336965760. Its totient is φ = 490026222000.

The previous prime is 1225526585443. The next prime is 1225526585471. The reversal of 1225526585450 is 545856255221.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4476026 + ... + 4741925.

It is an arithmetic number, because the mean of its divisors is an integer number (95014040240).

Almost surely, 2^{1225526585450} is an apocalyptic number.

1225526585450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225526585450 is a deficient number, since it is larger than the sum of its proper divisors (1054810380310).

1225526585450 is a wasteful number, since it uses less digits than its factorization.

1225526585450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9220622 (or 9220617 counting only the distinct ones).

The product of its (nonzero) digits is 4800000, while the sum is 50.

The spelling of 1225526585450 in words is "one trillion, two hundred twenty-five billion, five hundred twenty-six million, five hundred eighty-five thousand, four hundred fifty".