25045425 has 36 divisors (see below), whose sum is σ = 45208540. Its totient is φ = 13253760.

The previous prime is 25045409. The next prime is 25045429. The reversal of 25045425 is 52454052.

It can be written as a sum of positive squares in 6 ways, for example, as 4822416 + 20223009 = 2196^2 + 4497^2 .

It is not a de Polignac number, because 25045425 - 2⁴ = 25045409 is a prime.

It is a Curzon number.

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 35 ways as a sum of consecutive naturals, for example, 34971 + ... + 35679.

Almost surely, 2^25045425 is an apocalyptic number.

25045425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25045425 is a deficient number, since it is larger than the sum of its proper divisors (20163115).

25045425 is a wasteful number, since it uses less digits than its factorization.

25045425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 25045425 is about 5004.5404384419. The cubic root of 25045425 is about 292.5787646747.

Adding to 25045425 its reverse (52454052), we get a palindrome (77499477).

The spelling of 25045425 in words is "twenty-five million, forty-five thousand, four hundred twenty-five".