25547723325 has 24 divisors (see below), whose sum is σ = 46932115200. Its totient is φ = 13625452080.

The previous prime is 25547723321. The next prime is 25547723329. The reversal of 25547723325 is 52332774552.

It is a happy number.

25547723325 is a `hidden beast` number, since 2 + 5 + 547 + 72 + 3 + 32 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (25547723321) and next prime (25547723329).

It is not a de Polignac number, because 25547723325 - 2² = 25547723321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25547723321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18923565 + ... + 18924914.

It is an arithmetic number, because the mean of its divisors is an integer number (1955504800).

Almost surely, 2^25547723325 is an apocalyptic number.

25547723325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25547723325 is a deficient number, since it is larger than the sum of its proper divisors (21384391875).

25547723325 is a wasteful number, since it uses less digits than its factorization.

25547723325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37848498 (or 37848487 counting only the distinct ones).

The product of its digits is 1764000, while the sum is 45.

The spelling of 25547723325 in words is "twenty-five billion, five hundred forty-seven million, seven hundred twenty-three thousand, three hundred twenty-five".