25172430 has 32 divisors (see below), whose sum is σ = 60610464. Its totient is φ = 6690816.

The previous prime is 25172429. The next prime is 25172431. The reversal of 25172430 is 3427152.

It is an interprime number because it is at equal distance from previous prime (25172429) and next prime (25172431).

It is a self number, because there is not a number n which added to its sum of digits gives 25172430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25172431) 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, 9402 + ... + 11778.

It is an arithmetic number, because the mean of its divisors is an integer number (1894077).

Almost surely, 2^25172430 is an apocalyptic number.

25172430 is an abundant number, since it is smaller than the sum of its proper divisors (35438034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25172430 is a wasteful number, since it uses less digits than its factorization.

25172430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 25172430 is about 5017.2133699894. The cubic root of 25172430 is about 293.0724853376.

Adding to 25172430 its reverse (3427152), we get a palindrome (28599582).

The spelling of 25172430 in words is "twenty-five million, one hundred seventy-two thousand, four hundred thirty".