25322661 has 48 divisors (see below), whose sum is σ = 46009600. Its totient is φ = 13335840.

The previous prime is 25322659. The next prime is 25322663. The reversal of 25322661 is 16622352.

It is an interprime number because it is at equal distance from previous prime (25322659) and next prime (25322663).

It is not a de Polignac number, because 25322661 - 2¹ = 25322659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25322663) 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, 39816 + ... + 40446.

Almost surely, 2^25322661 is an apocalyptic number.

25322661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25322661 is a deficient number, since it is larger than the sum of its proper divisors (20686939).

25322661 is a wasteful number, since it uses less digits than its factorization.

25322661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 654 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 25322661 is about 5032.1626563536. The cubic root of 25322661 is about 293.6543557035.

The spelling of 25322661 in words is "twenty-five million, three hundred twenty-two thousand, six hundred sixty-one".