25764396340 has 48 divisors (see below), whose sum is σ = 58916793600. Its totient is φ = 9426678912.

The previous prime is 25764396323. The next prime is 25764396347. The reversal of 25764396340 is 4369346752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25764396347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1157964 + ... + 1180003.

It is an arithmetic number, because the mean of its divisors is an integer number (1227433200).

Almost surely, 2^25764396340 is an apocalyptic number.

25764396340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25764396340 is an abundant number, since it is smaller than the sum of its proper divisors (33152397260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25764396340 is a wasteful number, since it uses less digits than its factorization.

25764396340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338024 (or 2338022 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 25764396340 in words is "twenty-five billion, seven hundred sixty-four million, three hundred ninety-six thousand, three hundred forty".