15138407725 has 24 divisors (see below), whose sum is σ = 21665720448. Its totient is φ = 10277832000.

The previous prime is 15138407717. The next prime is 15138407729. The reversal of 15138407725 is 52770483151.

It is not a de Polignac number, because 15138407725 - 2³ = 15138407717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15138407729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 410569 + ... + 445918.

It is an arithmetic number, because the mean of its divisors is an integer number (902738352).

Almost surely, 2^15138407725 is an apocalyptic number.

It is an amenable number.

15138407725 is a deficient number, since it is larger than the sum of its proper divisors (6527312723).

15138407725 is a wasteful number, since it uses less digits than its factorization.

15138407725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856605 (or 856600 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 15138407725 in words is "fifteen billion, one hundred thirty-eight million, four hundred seven thousand, seven hundred twenty-five".