100025749 has 4 divisors (see below), whose sum is σ = 100164064. Its totient is φ = 99887436.

The previous prime is 100025743. The next prime is 100025789. The reversal of 100025749 is 947520001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100025749 - 2³ = 100025741 is a prime.

It is a super-2 number, since 2×100025749² = 20010300926022002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100025741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68067 + ... + 69520.

It is an arithmetic number, because the mean of its divisors is an integer number (25041016).

Almost surely, 2^100025749 is an apocalyptic number.

It is an amenable number.

100025749 is a deficient number, since it is larger than the sum of its proper divisors (138315).

100025749 is an equidigital number, since it uses as much as digits as its factorization.

100025749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138314.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 100025749 is about 10001.2873671343. The cubic root of 100025749 is about 464.1987186994.

It can be divided in two parts, 10002 and 5749, that added together give a palindrome (15751).

The spelling of 100025749 in words is "one hundred million, twenty-five thousand, seven hundred forty-nine".