25071261 has 4 divisors (see below), whose sum is σ = 33428352. Its totient is φ = 16714172.

The previous prime is 25071251. The next prime is 25071271. The reversal of 25071261 is 16217052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (25071251) and next prime (25071271).

It is a cyclic number.

It is not a de Polignac number, because 25071261 - 2¹⁰ = 25070237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25071251) 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, 4178541 + ... + 4178546.

It is an arithmetic number, because the mean of its divisors is an integer number (8357088).

Almost surely, 2^25071261 is an apocalyptic number.

It is an amenable number.

25071261 is a deficient number, since it is larger than the sum of its proper divisors (8357091).

25071261 is an equidigital number, since it uses as much as digits as its factorization.

25071261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357090.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 25071261 is about 5007.1210290945. The cubic root of 25071261 is about 292.6793348352.

The spelling of 25071261 in words is "twenty-five million, seventy-one thousand, two hundred sixty-one".