25486140 has 24 divisors (see below), whose sum is σ = 71361360. Its totient is φ = 6796288.

The previous prime is 25486127. The next prime is 25486147. The reversal of 25486140 is 4168452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25486098 and 25486107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25486147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212325 + ... + 212444.

It is an arithmetic number, because the mean of its divisors is an integer number (2973390).

Almost surely, 2^25486140 is an apocalyptic number.

25486140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25486140 is an abundant number, since it is smaller than the sum of its proper divisors (45875220).

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

25486140 is a wasteful number, since it uses less digits than its factorization.

25486140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424781 (or 424779 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 25486140 is about 5048.3799381584. The cubic root of 25486140 is about 294.2849290115.

The spelling of 25486140 in words is "twenty-five million, four hundred eighty-six thousand, one hundred forty".