25123011000 has 128 divisors (see below), whose sum is σ = 78440693760. Its totient is φ = 6694608000.

The previous prime is 25123010987. The next prime is 25123011013. The reversal of 25123011000 is 11032152.

It is an interprime number because it is at equal distance from previous prime (25123010987) and next prime (25123011013).

It is a super-2 number, since 2×25123011000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6331017 + ... + 6334983.

It is an arithmetic number, because the mean of its divisors is an integer number (612817920).

Almost surely, 2^25123011000 is an apocalyptic number.

25123011000 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 25123011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39220346880).

25123011000 is an abundant number, since it is smaller than the sum of its proper divisors (53317682760).

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

25123011000 is a wasteful number, since it uses less digits than its factorization.

25123011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6102 (or 6088 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 25123011000 its reverse (11032152), we get a palindrome (25134043152).

The spelling of 25123011000 in words is "twenty-five billion, one hundred twenty-three million, eleven thousand".