25152761 has 4 divisors (see below), whose sum is σ = 25163124. Its totient is φ = 25142400.

The previous prime is 25152739. The next prime is 25152767. The reversal of 25152761 is 16725152.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20611600 + 4541161 = 4540^2 + 2131^2 .

It is a cyclic number.

It is not a de Polignac number, because 25152761 - 2⁶ = 25152697 is a prime.

It is a super-2 number, since 2×25152761² = 1265322771846242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25152767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641 + ... + 7121.

It is an arithmetic number, because the mean of its divisors is an integer number (6290781).

Almost surely, 2^25152761 is an apocalyptic number.

It is an amenable number.

25152761 is a deficient number, since it is larger than the sum of its proper divisors (10363).

25152761 is an equidigital number, since it uses as much as digits as its factorization.

25152761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10362.

The product of its digits is 4200, while the sum is 29.

The square root of 25152761 is about 5015.2528351021. The cubic root of 25152761 is about 292.9961326937.

The spelling of 25152761 in words is "twenty-five million, one hundred fifty-two thousand, seven hundred sixty-one".