25155632348 has 90 divisors (see below), whose sum is σ = 56452160688. Its totient is φ = 9800442960.

The previous prime is 25155632347. The next prime is 25155632389. The reversal of 25155632348 is 84323655152.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 25155632299 and 25155632308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25155632347) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1151261 + ... + 1172907.

Almost surely, 2^25155632348 is an apocalyptic number.

25155632348 is a gapful number since it is divisible by the number (28) 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 25155632348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28226080344).

25155632348 is an abundant number, since it is smaller than the sum of its proper divisors (31296528340).

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

25155632348 is a wasteful number, since it uses less digits than its factorization.

25155632348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21701 (or 21667 counting only the distinct ones).

The product of its digits is 864000, while the sum is 44.

The spelling of 25155632348 in words is "twenty-five billion, one hundred fifty-five million, six hundred thirty-two thousand, three hundred forty-eight".