25481029 has 6 divisors (see below), whose sum is σ = 29641254. Its totient is φ = 21840840.

The previous prime is 25481023. The next prime is 25481047. The reversal of 25481029 is 92018452.

It can be written as a sum of positive squares in only one way, i.e., 13764100 + 11716929 = 3710^2 + 3423^2 .

It is not a de Polignac number, because 25481029 - 2³ = 25481021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481021) 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, 259962 + ... + 260059.

It is an arithmetic number, because the mean of its divisors is an integer number (4940209).

Almost surely, 2^25481029 is an apocalyptic number.

It is an amenable number.

25481029 is a deficient number, since it is larger than the sum of its proper divisors (4160225).

25481029 is an equidigital number, since it uses as much as digits as its factorization.

25481029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520035 (or 520028 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 25481029 is about 5047.8737107816. The cubic root of 25481029 is about 294.2652556932.

The spelling of 25481029 in words is "twenty-five million, four hundred eighty-one thousand, twenty-nine".