25015653340 has 96 divisors (see below), whose sum is σ = 57092200704. Its totient is φ = 9170273280.

The previous prime is 25015653307. The next prime is 25015653347. The reversal of 25015653340 is 4335651052.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 25015653296 and 25015653305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25015653347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5070675 + ... + 5075605.

It is an arithmetic number, because the mean of its divisors is an integer number (594710424).

Almost surely, 2^25015653340 is an apocalyptic number.

25015653340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25015653340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28546100352).

25015653340 is an abundant number, since it is smaller than the sum of its proper divisors (32076547364).

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

25015653340 is a wasteful number, since it uses less digits than its factorization.

25015653340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347 (or 5345 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 25015653340 in words is "twenty-five billion, fifteen million, six hundred fifty-three thousand, three hundred forty".