1025378190 has 40 divisors (see below), whose sum is σ = 2757130200. Its totient is φ = 273433968.

The previous prime is 1025378183. The next prime is 1025378197. The reversal of 1025378190 is 918735201.

1025378190 is a `hidden beast` number, since 102 + 537 + 8 + 19 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1025378183) and next prime (1025378197).

It is a super-2 number, since 2×1025378190² = 2102800865055352200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025378197) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 632140 + ... + 633759.

It is an arithmetic number, because the mean of its divisors is an integer number (68928255).

Almost surely, 2^1025378190 is an apocalyptic number.

1025378190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025378190 is an abundant number, since it is smaller than the sum of its proper divisors (1731752010).

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

1025378190 is a wasteful number, since it uses less digits than its factorization.

1025378190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265918 (or 1265909 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1025378190 is about 32021.5269779566. The cubic root of 1025378190 is about 1008.3888274598.

The spelling of 1025378190 in words is "one billion, twenty-five million, three hundred seventy-eight thousand, one hundred ninety".