25498420 has 12 divisors (see below), whose sum is σ = 53546724. Its totient is φ = 10199360.

The previous prime is 25498409. The next prime is 25498469. The reversal of 25498420 is 2489452.

It can be written as a sum of positive squares in 2 ways, for example, as 11985444 + 13512976 = 3462^2 + 3676^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637441 + ... + 637480.

It is an arithmetic number, because the mean of its divisors is an integer number (4462227).

Almost surely, 2^25498420 is an apocalyptic number.

25498420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25498420 is an abundant number, since it is smaller than the sum of its proper divisors (28048304).

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

25498420 is a wasteful number, since it uses less digits than its factorization.

25498420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274930 (or 1274928 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 25498420 is about 5049.5960234458. The cubic root of 25498420 is about 294.3321865753.

The spelling of 25498420 in words is "twenty-five million, four hundred ninety-eight thousand, four hundred twenty".