90420625425 has 24 divisors (see below), whose sum is σ = 160995084544. Its totient is φ = 44514768960.

The previous prime is 90420625411. The next prime is 90420625433. The reversal of 90420625425 is 52452602409.

It is not a de Polignac number, because 90420625425 - 2⁷ = 90420625297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46368577 + ... + 46370526.

Almost surely, 2^90420625425 is an apocalyptic number.

It is an amenable number.

90420625425 is a deficient number, since it is larger than the sum of its proper divisors (70574459119).

90420625425 is a wasteful number, since it uses less digits than its factorization.

90420625425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92739129 (or 92739124 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 90420625425 in words is "ninety billion, four hundred twenty million, six hundred twenty-five thousand, four hundred twenty-five".