15525425142 has 16 divisors (see below), whose sum is σ = 34500944880. Its totient is φ = 5175141696.

The previous prime is 15525425099. The next prime is 15525425147. The reversal of 15525425142 is 24152452551.

15525425142 is a `hidden beast` number, since 1 + 5 + 525 + 42 + 51 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 15525425097 and 15525425106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15525425147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143753883 + ... + 143753990.

It is an arithmetic number, because the mean of its divisors is an integer number (2156309055).

Almost surely, 2^15525425142 is an apocalyptic number.

15525425142 is an abundant number, since it is smaller than the sum of its proper divisors (18975519738).

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

15525425142 is a wasteful number, since it uses less digits than its factorization.

15525425142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287507884 (or 287507878 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

Adding to 15525425142 its reverse (24152452551), we get a palindrome (39677877693).

The spelling of 15525425142 in words is "fifteen billion, five hundred twenty-five million, four hundred twenty-five thousand, one hundred forty-two".