25140195 has 48 divisors (see below), whose sum is σ = 47005920. Its totient is φ = 12383232.

The previous prime is 25140149. The next prime is 25140197. The reversal of 25140195 is 59104152.

25140195 is a `hidden beast` number, since 251 + 401 + 9 + 5 = 666.

It is a Cunningham number, because it is equal to 5014²-1.

It is not a de Polignac number, because 25140195 - 2⁷ = 25140067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140197) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44857 + ... + 45413.

It is an arithmetic number, because the mean of its divisors is an integer number (979290).

Almost surely, 2^25140195 is an apocalyptic number.

25140195 is a deficient number, since it is larger than the sum of its proper divisors (21865725).

25140195 is a wasteful number, since it uses less digits than its factorization.

25140195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 25140195 is about 5013.9999002792. Note that the first 4 decimals coincide. The cubic root of 25140195 is about 292.9473321836.

The spelling of 25140195 in words is "twenty-five million, one hundred forty thousand, one hundred ninety-five".