15201661425 has 48 divisors (see below), whose sum is σ = 25988669952. Its totient is φ = 7832563200.

The previous prime is 15201661421. The next prime is 15201661441. The reversal of 15201661425 is 52416610251.

It is not a de Polignac number, because 15201661425 - 2² = 15201661421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15201661421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1429227 + ... + 1439823.

It is an arithmetic number, because the mean of its divisors is an integer number (541430624).

Almost surely, 2^15201661425 is an apocalyptic number.

15201661425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15201661425 is a deficient number, since it is larger than the sum of its proper divisors (10787008527).

15201661425 is a wasteful number, since it uses less digits than its factorization.

15201661425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11258 (or 11253 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 15201661425 in words is "fifteen billion, two hundred one million, six hundred sixty-one thousand, four hundred twenty-five".