25309125 has 32 divisors (see below), whose sum is σ = 46800000. Its totient is φ = 13496400.

The previous prime is 25309099. The next prime is 25309127. The reversal of 25309125 is 52190352.

25309125 is a `hidden beast` number, since 2 + 530 + 9 + 125 = 666.

It is not a de Polignac number, because 25309125 - 2⁵ = 25309093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25309127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 375 + ... + 7124.

It is an arithmetic number, because the mean of its divisors is an integer number (1462500).

Almost surely, 2^25309125 is an apocalyptic number.

25309125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25309125 is a deficient number, since it is larger than the sum of its proper divisors (21490875).

25309125 is an equidigital number, since it uses as much as digits as its factorization.

25309125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7523 (or 7507 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 25309125 is about 5030.8175279968. The cubic root of 25309125 is about 293.6020229488.

Adding to 25309125 its reverse (52190352), we get a palindrome (77499477).

It can be divided in two parts, 253091 and 25, that added together give a triangular number (253116 = T₇₁₁).

The spelling of 25309125 in words is "twenty-five million, three hundred nine thousand, one hundred twenty-five".