15125291265 has 16 divisors (see below), whose sum is σ = 27657675648. Its totient is φ = 6914418816.

The previous prime is 15125291261. The next prime is 15125291287. The reversal of 15125291265 is 56219252151.

It is not a de Polignac number, because 15125291265 - 2² = 15125291261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15125291261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72025092 + ... + 72025301.

It is an arithmetic number, because the mean of its divisors is an integer number (1728604728).

Almost surely, 2^15125291265 is an apocalyptic number.

15125291265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15125291265 is a deficient number, since it is larger than the sum of its proper divisors (12532384383).

15125291265 is a wasteful number, since it uses less digits than its factorization.

15125291265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144050408.

The product of its digits is 54000, while the sum is 39.

The spelling of 15125291265 in words is "fifteen billion, one hundred twenty-five million, two hundred ninety-one thousand, two hundred sixty-five".