13531201425 has 72 divisors (see below), whose sum is σ = 29327515776. Its totient is φ = 5821816320.

The previous prime is 13531201417. The next prime is 13531201549. The reversal of 13531201425 is 52410213531.

13531201425 is a `hidden beast` number, since 1 + 3 + 5 + 31 + 201 + 425 = 666.

It is not a de Polignac number, because 13531201425 - 2³ = 13531201417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 225909 + ... + 279458.

It is an arithmetic number, because the mean of its divisors is an integer number (407326608).

Almost surely, 2^13531201425 is an apocalyptic number.

13531201425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13531201425 is an abundant number, since it is smaller than the sum of its proper divisors (15796314351).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13531201425 is a wasteful number, since it uses less digits than its factorization.

13531201425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505407 (or 505399 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 13531201425 its reverse (52410213531), we get a palindrome (65941414956).

The spelling of 13531201425 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, four hundred twenty-five".