25473897 has 6 divisors (see below), whose sum is σ = 36795642. Its totient is φ = 16982592.

The previous prime is 25473893. The next prime is 25473901. The reversal of 25473897 is 79837452.

It is an interprime number because it is at equal distance from previous prime (25473893) and next prime (25473901).

It can be written as a sum of positive squares in only one way, i.e., 13111641 + 12362256 = 3621^2 + 3516^2 .

It is not a de Polignac number, because 25473897 - 2² = 25473893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25473893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1415208 + ... + 1415225.

It is an arithmetic number, because the mean of its divisors is an integer number (6132607).

Almost surely, 2^25473897 is an apocalyptic number.

It is an amenable number.

25473897 is a deficient number, since it is larger than the sum of its proper divisors (11321745).

25473897 is a wasteful number, since it uses less digits than its factorization.

25473897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830439 (or 2830436 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 25473897 is about 5047.1672252859. The cubic root of 25473897 is about 294.2377987220.

The spelling of 25473897 in words is "twenty-five million, four hundred seventy-three thousand, eight hundred ninety-seven".