15225452531 has 16 divisors (see below), whose sum is σ = 16029425664. Its totient is φ = 14433560064.

The previous prime is 15225452527. The next prime is 15225452551. The reversal of 15225452531 is 13525452251.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15225452531 - 2² = 15225452527 is a prime.

It is a super-2 number, since 2×15225452531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15225452491 and 15225452500.

It is not an unprimeable number, because it can be changed into a prime (15225452551) 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, 3552716 + ... + 3556998.

It is an arithmetic number, because the mean of its divisors is an integer number (1001839104).

Almost surely, 2^15225452531 is an apocalyptic number.

15225452531 is a deficient number, since it is larger than the sum of its proper divisors (803973133).

15225452531 is a wasteful number, since it uses less digits than its factorization.

15225452531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650.

The product of its digits is 60000, while the sum is 35.

The spelling of 15225452531 in words is "fifteen billion, two hundred twenty-five million, four hundred fifty-two thousand, five hundred thirty-one".