25132861 has 8 divisors (see below), whose sum is σ = 27105624. Its totient is φ = 23165760.

The previous prime is 25132841. The next prime is 25132867. The reversal of 25132861 is 16823152.

It can be written as a sum of positive squares in 4 ways, for example, as 481636 + 24651225 = 694^2 + 4965^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25132861 - 2¹¹ = 25130813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25132867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14535 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (3388203).

Almost surely, 2^25132861 is an apocalyptic number.

It is an amenable number.

25132861 is a deficient number, since it is larger than the sum of its proper divisors (1972763).

25132861 is a wasteful number, since it uses less digits than its factorization.

25132861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831.

The product of its digits is 2880, while the sum is 28.

The square root of 25132861 is about 5013.2684947048. The cubic root of 25132861 is about 292.9188428171.

The spelling of 25132861 in words is "twenty-five million, one hundred thirty-two thousand, eight hundred sixty-one".