20125513432 has 16 divisors (see below), whose sum is σ = 37748273760. Its totient is φ = 10059307104.

The previous prime is 20125513403. The next prime is 20125513433. The reversal of 20125513432 is 23431552102.

It is a super-2 number, since 2×20125513432² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20125513432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125513433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406323 + ... + 453154.

It is an arithmetic number, because the mean of its divisors is an integer number (2359267110).

Almost surely, 2^20125513432 is an apocalyptic number.

It is an amenable number.

20125513432 is a deficient number, since it is larger than the sum of its proper divisors (17622760328).

20125513432 is a wasteful number, since it uses less digits than its factorization.

20125513432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862410 (or 862406 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 20125513432 in words is "twenty billion, one hundred twenty-five million, five hundred thirteen thousand, four hundred thirty-two".