25150420 has 12 divisors (see below), whose sum is σ = 52815924. Its totient is φ = 10060160.

The previous prime is 25150403. The next prime is 25150441. The reversal of 25150420 is 2405152.

It can be written as a sum of positive squares in 2 ways, for example, as 8225424 + 16924996 = 2868^2 + 4114^2 .

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, 628741 + ... + 628780.

It is an arithmetic number, because the mean of its divisors is an integer number (4401327).

Almost surely, 2^25150420 is an apocalyptic number.

25150420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25150420 is an abundant number, since it is smaller than the sum of its proper divisors (27665504).

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

25150420 is a wasteful number, since it uses less digits than its factorization.

25150420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257530 (or 1257528 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 25150420 is about 5015.0194416373. The cubic root of 25150420 is about 292.9870425686.

Adding to 25150420 its reverse (2405152), we get a palindrome (27555572).

The spelling of 25150420 in words is "twenty-five million, one hundred fifty thousand, four hundred twenty".