25138277063769 has 4 divisors (see below), whose sum is σ = 33517702751696. Its totient is φ = 16758851375844.

The previous prime is 25138277063761. The next prime is 25138277063771. The reversal of 25138277063769 is 96736077283152.

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 not a de Polignac number, because 25138277063769 - 2³ = 25138277063761 is a prime.

It is a super-2 number, since 2×25138277063769² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25138277063761) 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, 4189712843959 + ... + 4189712843964.

It is an arithmetic number, because the mean of its divisors is an integer number (8379425687924).

Almost surely, 2^{25138277063769} is an apocalyptic number.

It is an amenable number.

25138277063769 is a deficient number, since it is larger than the sum of its proper divisors (8379425687927).

25138277063769 is an equidigital number, since it uses as much as digits as its factorization.

25138277063769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8379425687926.

The product of its (nonzero) digits is 160030080, while the sum is 66.

The spelling of 25138277063769 in words is "twenty-five trillion, one hundred thirty-eight billion, two hundred seventy-seven million, sixty-three thousand, seven hundred sixty-nine".