25045427 has 16 divisors (see below), whose sum is σ = 28483584. Its totient is φ = 21997800.

The previous prime is 25045409. The next prime is 25045429. The reversal of 25045427 is 72454052.

It is a happy number.

It is not a de Polignac number, because 25045427 - 2¹⁰ = 25044403 is a prime.

It is a super-2 number, since 2×25045427² = 1254546827224658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25045427.

It is not an unprimeable number, because it can be changed into a prime (25045429) 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, 40958 + ... + 41564.

It is an arithmetic number, because the mean of its divisors is an integer number (1780224).

Almost surely, 2^25045427 is an apocalyptic number.

25045427 is a deficient number, since it is larger than the sum of its proper divisors (3438157).

25045427 is an equidigital number, since it uses as much as digits as its factorization.

25045427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 25045427 is about 5004.5406382604. The cubic root of 25045427 is about 292.5787724627.

Adding to 25045427 its reverse (72454052), we get a palindrome (97499479).

The spelling of 25045427 in words is "twenty-five million, forty-five thousand, four hundred twenty-seven".