45265250681 has 4 divisors (see below), whose sum is σ = 51731715072. Its totient is φ = 38798786292.

The previous prime is 45265250663. The next prime is 45265250683. The reversal of 45265250681 is 18605256254.

It is a happy number.

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 de Polignac number, because none of the positive numbers 2^k-45265250681 is a prime.

It is a super-2 number, since 2×45265250681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45265250683) 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, 3233232185 + ... + 3233232198.

It is an arithmetic number, because the mean of its divisors is an integer number (12932928768).

Almost surely, 2^45265250681 is an apocalyptic number.

It is an amenable number.

45265250681 is a deficient number, since it is larger than the sum of its proper divisors (6466464391).

45265250681 is an equidigital number, since it uses as much as digits as its factorization.

45265250681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6466464390.

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 45265250681 in words is "forty-five billion, two hundred sixty-five million, two hundred fifty thousand, six hundred eighty-one".