25942948637 has 4 divisors (see below), whose sum is σ = 25951366560. Its totient is φ = 25934530716.

The previous prime is 25942948613. The next prime is 25942948643. The reversal of 25942948637 is 73684924952.

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 a cyclic number.

It is not a de Polignac number, because 25942948637 - 2⁶ = 25942948573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25942948607) 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, 4204337 + ... + 4210502.

It is an arithmetic number, because the mean of its divisors is an integer number (6487841640).

Almost surely, 2^25942948637 is an apocalyptic number.

It is an amenable number.

25942948637 is a deficient number, since it is larger than the sum of its proper divisors (8417923).

25942948637 is an equidigital number, since it uses as much as digits as its factorization.

25942948637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8417922.

The product of its digits is 26127360, while the sum is 59.

The spelling of 25942948637 in words is "twenty-five billion, nine hundred forty-two million, nine hundred forty-eight thousand, six hundred thirty-seven".