1025100 has 108 divisors (see below), whose sum is σ = 3452904. Its totient is φ = 253440.

The previous prime is 1025099. The next prime is 1025111. The reversal of 1025100 is 15201.

It is a happy number.

1025100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15267 + ... + 15333.

2^1025100 is an apocalyptic number.

1025100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1726452).

1025100 is an abundant number, since it is smaller than the sum of its proper divisors (2427804).

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

1025100 is a wasteful number, since it uses less digits than its factorization.

1025100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 1025100 is about 1012.4722218412. The cubic root of 1025100 is about 100.8297625643.

The spelling of 1025100 in words is "one million, twenty-five thousand, one hundred".