15625074489 has 16 divisors (see below), whose sum is σ = 21502775040. Its totient is φ = 10087315920.

The previous prime is 15625074481. The next prime is 15625074511. The reversal of 15625074489 is 98447052651.

It is not a de Polignac number, because 15625074489 - 2³ = 15625074481 is a prime.

It is a super-2 number, since 2×15625074489² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15625074481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646927 + ... + 670644.

It is an arithmetic number, because the mean of its divisors is an integer number (1343923440).

Almost surely, 2^15625074489 is an apocalyptic number.

It is an amenable number.

15625074489 is a deficient number, since it is larger than the sum of its proper divisors (5877700551).

15625074489 is a wasteful number, since it uses less digits than its factorization.

15625074489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317700.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 15625074489 in words is "fifteen billion, six hundred twenty-five million, seventy-four thousand, four hundred eighty-nine".