25472181 has 16 divisors (see below), whose sum is σ = 38928384. Its totient is φ = 14512944.

The previous prime is 25472177. The next prime is 25472189. The reversal of 25472181 is 18127452.

It is not a de Polignac number, because 25472181 - 2² = 25472177 is a prime.

It is a super-2 number, since 2×25472181² = 1297664009793522, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25472189) 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, 6460 + ... + 9626.

It is an arithmetic number, because the mean of its divisors is an integer number (2433024).

Almost surely, 2^25472181 is an apocalyptic number.

25472181 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25472181 is a deficient number, since it is larger than the sum of its proper divisors (13456203).

25472181 is a wasteful number, since it uses less digits than its factorization.

25472181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560.

The product of its digits is 4480, while the sum is 30.

The square root of 25472181 is about 5046.9972260741. The cubic root of 25472181 is about 294.2311916528.

The spelling of 25472181 in words is "twenty-five million, four hundred seventy-two thousand, one hundred eighty-one".