25266072946 has 4 divisors (see below), whose sum is σ = 37899109422. Its totient is φ = 12633036472.

The previous prime is 25266072943. The next prime is 25266072959. The reversal of 25266072946 is 64927066252.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 13152649225 + 12113423721 = 114685^2 + 110061^2 .

It is a super-2 number, since 2×25266072946² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25266072946.

It is not an unprimeable number, because it can be changed into a prime (25266072943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6316518235 + ... + 6316518238.

Almost surely, 2^25266072946 is an apocalyptic number.

25266072946 is a deficient number, since it is larger than the sum of its proper divisors (12633036476).

25266072946 is a wasteful number, since it uses less digits than its factorization.

25266072946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12633036475.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 25266072946 in words is "twenty-five billion, two hundred sixty-six million, seventy-two thousand, nine hundred forty-six".