25660942 has 4 divisors (see below), whose sum is σ = 38491416. Its totient is φ = 12830470.

The previous prime is 25660937. The next prime is 25660949. The reversal of 25660942 is 24906652.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 25660898 and 25660907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25660949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415234 + ... + 6415237.

It is an arithmetic number, because the mean of its divisors is an integer number (9622854).

Almost surely, 2^25660942 is an apocalyptic number.

25660942 is a deficient number, since it is larger than the sum of its proper divisors (12830474).

25660942 is a wasteful number, since it uses less digits than its factorization.

25660942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12830473.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 25660942 is about 5065.6630365629. The cubic root of 25660942 is about 294.9562014838.

The spelling of 25660942 in words is "twenty-five million, six hundred sixty thousand, nine hundred forty-two".