109249725 has 48 divisors (see below), whose sum is σ = 196862400. Its totient is φ = 53137920.

The previous prime is 109249711. The next prime is 109249727. The reversal of 109249725 is 527942901.

It is not a de Polignac number, because 109249725 - 2¹² = 109245629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109249727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86146 + ... + 87404.

It is an arithmetic number, because the mean of its divisors is an integer number (4101300).

Almost surely, 2^109249725 is an apocalyptic number.

109249725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109249725 is a deficient number, since it is larger than the sum of its proper divisors (87612675).

109249725 is a wasteful number, since it uses less digits than its factorization.

109249725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1369 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 109249725 is about 10452.2593251411. The cubic root of 109249725 is about 478.0501412128.

The spelling of 109249725 in words is "one hundred nine million, two hundred forty-nine thousand, seven hundred twenty-five".