28524477725 has 6 divisors (see below), whose sum is σ = 35370352410. Its totient is φ = 22819582160.

The previous prime is 28524477677. The next prime is 28524477727. The reversal of 28524477725 is 52777442582.

It can be written as a sum of positive squares in 3 ways, for example, as 9882944569 + 18641533156 = 99413^2 + 136534^2 .

It is not a de Polignac number, because 28524477725 - 2²⁴ = 28507700509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28524477727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 570489530 + ... + 570489579.

It is an arithmetic number, because the mean of its divisors is an integer number (5895058735).

Almost surely, 2^28524477725 is an apocalyptic number.

28524477725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28524477725 is a deficient number, since it is larger than the sum of its proper divisors (6845874685).

28524477725 is a wasteful number, since it uses less digits than its factorization.

28524477725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140979119 (or 1140979114 counting only the distinct ones).

The product of its digits is 8780800, while the sum is 53.

The spelling of 28524477725 in words is "twenty-eight billion, five hundred twenty-four million, four hundred seventy-seven thousand, seven hundred twenty-five".