25473630 has 192 divisors, whose sum is σ = 80898048. Its totient is φ = 5080320.

The previous prime is 25473619. The next prime is 25473641. The reversal of 25473630 is 3637452.

It is an interprime number because it is at equal distance from previous prime (25473619) and next prime (25473641).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 592389 + ... + 592431.

It is an arithmetic number, because the mean of its divisors is an integer number (421344).

Almost surely, 2^25473630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25473630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40449024).

25473630 is an abundant number, since it is smaller than the sum of its proper divisors (55424418).

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

25473630 is a wasteful number, since it uses less digits than its factorization.

25473630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 25473630 is about 5047.1407747357. The cubic root of 25473630 is about 294.2367707185.

The spelling of 25473630 in words is "twenty-five million, four hundred seventy-three thousand, six hundred thirty".