25078771340 has 72 divisors (see below), whose sum is σ = 62178404400. Its totient is φ = 8470078848.

The previous prime is 25078771321. The next prime is 25078771343. The reversal of 25078771340 is 4317787052.

It is a junction number, because it is equal to n+sod(n) for n = 25078771291 and 25078771300.

It is not an unprimeable number, because it can be changed into a prime (25078771343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125315 + ... + 256634.

It is an arithmetic number, because the mean of its divisors is an integer number (863588950).

Almost surely, 2^25078771340 is an apocalyptic number.

25078771340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25078771340 is an abundant number, since it is smaller than the sum of its proper divisors (37099633060).

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

25078771340 is a wasteful number, since it uses less digits than its factorization.

25078771340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382039 (or 382030 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 25078771340 in words is "twenty-five billion, seventy-eight million, seven hundred seventy-one thousand, three hundred forty".