49961925 has 144 divisors (see below), whose sum is σ = 108326400. Its totient is φ = 21772800.

The previous prime is 49961921. The next prime is 49961939. The reversal of 49961925 is 52916994.

49961925 is a `hidden beast` number, since 4 + 9 + 9 + 619 + 25 = 666.

It is not a de Polignac number, because 49961925 - 2² = 49961921 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (174960) is a multiple of the sum of its prime factors (108).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49961921) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1611660 + ... + 1611690.

Almost surely, 2^49961925 is an apocalyptic number.

49961925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49961925 is an abundant number, since it is smaller than the sum of its proper divisors (58364475).

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

49961925 is a wasteful number, since it uses less digits than its factorization.

49961925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 100 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 49961925 is about 7068.3749900525. The cubic root of 49961925 is about 368.3096131177.

The spelling of 49961925 in words is "forty-nine million, nine hundred sixty-one thousand, nine hundred twenty-five".