15225350531 has 2 divisors, whose sum is σ = 15225350532. Its totient is φ = 15225350530.

The previous prime is 15225350527. The next prime is 15225350561. The reversal of 15225350531 is 13505352251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15225350531 - 2² = 15225350527 is a prime.

It is a super-2 number, since 2×15225350531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15225350561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7612675265 + 7612675266.

It is an arithmetic number, because the mean of its divisors is an integer number (7612675266).

Almost surely, 2^15225350531 is an apocalyptic number.

15225350531 is a deficient number, since it is larger than the sum of its proper divisors (1).

15225350531 is an equidigital number, since it uses as much as digits as its factorization.

15225350531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 15225350531 in words is "fifteen billion, two hundred twenty-five million, three hundred fifty thousand, five hundred thirty-one".